add /img/n/m endpoint to skiaserve

include/private/GrAuditTrail.h

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrAuditTrail_DEFINED
 #define GrAuditTrail_DEFINED
 
@@ skipping 96 matching lines @@
         SkRect fBounds;
         uint32_t fRenderTargetUniqueID;
         struct Batch {
             int fClientID;
             SkRect fBounds;
         };
         SkTArray<Batch> fBatches;
     };
 
     void getBoundsByClientID(SkTArray<BatchInfo>* outInfo, int clientID);
+    void getBoundsByBatchListID(BatchInfo* outInfo, int batchListID);
 
     void fullReset();
 
     static const int kGrAuditTrailInvalidID;
 
 private:
     // TODO if performance becomes an issue, we can move to using SkVarAlloc
     struct Batch {
         SkString toJson() const;
         SkString fName;
         SkRect fBounds;
         int fClientID;
         int fBatchListID;
         int fChildID;
     };
     typedef SkTArray<SkAutoTDelete<Batch>, true> BatchPool;
 
     typedef SkTArray<Batch*> Batches;
 
     struct BatchNode {
         SkString toJson() const;
         SkRect fBounds;
         Batches fChildren;
         uint32_t fRenderTargetUniqueID;
     };
     typedef SkTArray<SkAutoTDelete<BatchNode>, true> BatchList;
 
+    void copyOutFromBatchList(BatchInfo* outBatchInfo, int batchListID);
+
     template <typename T>
     static void JsonifyTArray(SkString* json, const char* name, const T& array,
                               bool addComma);
 
     Batch* fCurrentBatch;
     BatchPool fBatchPool;
     SkTHashMap<GrBatch*, int> fIDLookup;
     SkTHashMap<int, Batches*> fClientIDLookup;
     BatchList fBatchList;
 
@@ skipping 17 matching lines @@
 #define GR_AUDIT_TRAIL_ADDBATCH(audit_trail, batchname, bounds) \
     GR_AUDIT_TRAIL_INVOKE_GUARD(audit_trail, addBatch, batchname, bounds);
 
 #define GR_AUDIT_TRAIL_BATCHING_RESULT_COMBINED(audit_trail, combiner) \
     GR_AUDIT_TRAIL_INVOKE_GUARD(audit_trail, batchingResultCombined, combiner);
 
 #define GR_AUDIT_TRAIL_BATCHING_RESULT_NEW(audit_trail, batch) \
     GR_AUDIT_TRAIL_INVOKE_GUARD(audit_trail, batchingResultNew, batch);
 
 #endif